49
D. If you have a heat pump without aux heat, the Venstar model will
require 5 wires: R (24Vac), C (24Vac), W1/O/B (Reversing Value), Y (1
st
Stage Compressor), and G (Fan).
If you are short 1 wire, there are at least 3 options available to connect
the Venstar thermostat:
1. Use the available wires as instructed in the“Making 4 Wires
Work When 5 Wires Are Required” section on page 75 and note
that the fan will only operate with a Heating or Cooling demand.
2. Pull new thermostat wire from the HVAC equipment to the
thermostat so that there are at least 5 wires available.
3. Purchase and install a Venstar Add-A-Wire accessory.
E. If you have a heat pump with aux heat, the Venstar model will require
6 wires: R (24Vac), C (24Vac), W1/O/B (Reversing Value), Y (1
st
Stage
Compressor), W2 (Aux Heat), and G (Fan).
If you are short 1 wire, there are at least 3 options available to connect
the Venstar thermostat:
1. Use the available wires as instructed in the“Making 5 Wires
Work When 6 Wires Are Required” section on page 76 and note
that the fan will only operate with a Heating or Cooling demand.
2. Pull new thermostat wire from the HVAC equipment to the
thermostat so that there are at least 6 wires available.
3. Purchase and install a Venstar Add-A-Wire accessory.
Installation Instructions
Summary of Contents for ColorTouch T8800
Page 1: ...Owner s Manual Installation Guide COMMERCIAL MODEL T8800 ...
Page 31: ...23 Main Menu Buttons Holidays Holiday Schedule OFF Edit Holidays Preset Holidays Holidays ...
Page 48: ...40 Installation Settings AUX Output Settings Main Menu Buttons Settings ...
Page 70: ...Printed on recycled paper P N 88 1091 Rev 1 07 15 Patents Issued Pending ...
